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Simplifying (3x + 21) = 90 Reorder the terms: (21 + 3x) = 90 Remove parenthesis around (21 + 3x) 21 + 3x = 90 Solving 21 + 3x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 3x = 90 + -21 Combine like terms: 21 + -21 = 0 0 + 3x = 90 + -21 3x = 90 + -21 Combine like terms: 90 + -21 = 69 3x = 69 Divide each side by '3'. x = 23 Simplifying x = 23
| (4x+60)=180 | | 81/6/n=51/2/71/3 | | (12+l)+l=72 | | 18-2q=4q | | 4*7.5+60= | | 12l+l=72 | | 3(2x-6)+5=2x-3 | | 4*7.5+60=90 | | 2y+27=57 | | 4x+60=90 | | 1/4x=950 | | 0.2x+24.8=36 | | 9-(3n-1)=7-4n | | 3(m+9)=60 | | 7v=2w-20 | | 9-2x=27 | | 9-2x=27 | | 2(3x+5)=-50+6 | | 4y=8x-x^2 | | 3n+78=81 | | x-x^3=404 | | 5ln(4x-3)=15 | | d=b-c/a | | 3a^2-13a+12=0 | | 5-1/2v=9 | | 2t-(3t+7t)=9 | | -15+64=80y-37-79y | | 3x-15x/4+5=29/4 | | 4x^2+15=5x^2-9 | | n+(-8)=5 | | (x-4)(x^2-5x+7)= | | -3(5n-7)=81 |